WordPressサイトでトラブルが発生し、トラブルシューティングのために管理エリアにアクセスできなかったことはありませんか？これは、多くのWordPressユーザーがどこかで直面するイライラする経験です。
トラブルシューティングの一般的なステップのひとつは、すべてのプラグインを無効化し、ひとつずつ再有効化することです。これは、プラグインの競合が問題を引き起こしているかどうかを特定するのに役立ちます。しかし、この重要なステップを実行するためにwp-adminにログインすることさえできない場合、あなたはどうしますか？
ご心配なく、解決策があります。このガイドでは、管理エリアからロックアウトされたときにWordPressプラグインをすべて無効化する方法をご紹介します。
WordPressサイトの管理エリアにアクセスせずにプラグインを無効化するには、よく使われる2つの方法があります。簡単そうな方を選んでください：
方法1：FTPを使ってWordPressのプラグインをすべて無効化する
この方法では、FTPクライアントまたはWordPressホスティングコントロールパネルのファイルマネージャーアプリを使用する必要があります。
FTPを使ったことがない場合は、FTPを使ってWordPressにファイルをアップロードする方法をご覧ください。
まず、FTPクライアントまたはcPanelのファイルマネージャを使ってサイトに接続する必要があります。接続したら、/wp-content/フォルダーにナビゲーションする必要があります。
wp-contentフォルダーの中にpluginsというフォルダーがあります。WordPressはここに、サイトにインストールされているすべてのプラグインを保存します。
プラグインフォルダーを右クリックし、「名前の変更」を選択する必要があります。
次に、フォルダー名を好きなものに変更してください。この例では、plugins.deactivatedと呼ぶことにする。
これを行うと、すべてのプラグインが無効化されます。
WordPressはプラグインファイルを読み込むために「plugins」というフォルダーを探すからだ。そのフォルダーが見つからない場合、データベース内の有効化したプラグインを自動的に無効化します。
通常、この方法は管理エリアからロックアウトされた場合に使用します。プラグインに問題があった場合は、WordPressの管理エリアにログインできるはずです。
WordPress管理エリアのプラグイン ” インストール済みプラグインのページにアクセスすると、無効化されたすべてのプラグインの通知が表示されます。
また、プラグインがすべて消えていることにもお気づきでしょう。心配しないでください。プラグインはすべて安全で、簡単に復元できます。
FTPクライアントに戻り、/wp-content/フォルダーに移動します。ここから、plugins.deactivatedフォルダーをpluginsにリネームする必要があります。
これで、WordPress管理エリアのプラグイン ” インストール済みプラグインのページに戻り、サイトが再び壊れるまでプラグインを1つずつ有効化することができる。
この時点で、どのプラグインが問題の原因であったかを正確に知ることができます。その後、FTPを使ってサイトからそのプラグインのフォルダーを削除するか、プラグイン作者にサポートを求めることができます。
方法2：phpMyAdminを使ってすべてのプラグインを無効化する
私たちの意見では、FTPの方法は間違いなく簡単です。しかし、phpMyAdminを使ってWordPressプラグインをすべて無効化することもできます。
重要：何かをする前に、データベースの完全なバックアップを取ってください。何か問題が発生した場合に役立ちます。
次に、Webホスティングダッシュボードにログインする必要があります。この例では、cPanelダッシュボードを示しています。お客様のホスティングサービスのダッシュボードは異なる場合があります。
データベースセクションの下にある’phpMyAdmin’アイコンをクリックする必要があります。
新しいブラウザーウィンドウでphpMyAdminが起動します。
WordPressデータベースがすでに選択されていない場合は、選択する必要があります。その後、WordPressデータベースのテーブルが表示されます。
ご覧のように、データベース内のすべてのテーブルには、テーブル名の前にwp_プレフィックスが付いています。あなたのテーブルのデータベース接頭辞は違うかもしれません。
wp_optionsテーブルをクリックしてください。wp_optionsテーブルの中に、さまざまなオプションの行が表示されます。active_plugins’オプションを見つけ、その横にある’Edit’リンクをクリックしてください。
次の画面で、option_valueフィールドをa:0:{}に変更する必要があります。
その後、「Go」ボタンをクリックして変更を保存します。
phpMyAdminを使用して、WordPressプラグインをすべて無効化できました。プラグインが WordPress 管理画面へのアクセスを妨げていた場合は、これでログインできるはずです。
動画チュートリアル
WordPressプラグインのエキスパートガイド
この投稿がWordPressのプラグインをすべて無効化するのにお役に立てば幸いです。WordPressプラグインのトラブルシューティングに関する他のガイドもご覧ください：
- WordPressプラグインとは？どのように機能するのか？
- WordPressプラグインを簡単に無効化する方法（初心者ガイド）
- データベースからWordPressプラグインを有効化／有効化する方法
- 非アクティブなプラグインはWordPressを遅くする？削除すべき？
- WordPressプラグインはいくつインストールすべきか？多すぎるとは？
- 古いWordPressプラグインを使っても大丈夫？解説
- WordPressのバージョンでテストされていないプラグインをインストールすべきか？
- WordPressプラグインの正しい更新方法（ステップバイステップ）
- WordPressとプラグインのどちらを先に更新すべきか？(適切な更新順序)
If you liked this article, then please subscribe to our YouTube Channel for WordPress video tutorials. You can also find us on Twitter and Facebook.
phills.B
THANK YOU! tonight wpbeginner saved my life
you have no idea how long i’ve been looking for a fix and never would have thought it’s that simple …
Sanjay Rath
Awesome articles. Just followed the steps and removed WP-Optimize which I had just upgraded
miraben
Solved a problem just following this article. A BIG Thanks.
Martyn
THANK YOU!! This article got me out of an issue that I had suffered for months. I thought a Wordpress update would solve the issue – but when the next update came – I couldn’t access it as it was also suffering the ‘white screen of death’
Followed the instructions – sorted!
Thank you again
MM
I had the white screen throughout my entire site after updating some plugins. I did this and I was able to access admin panel, but still had white screen on front in. Wouldn’t making all them inactive bring the site back all together? Not sure why deactivating them let me access admin panel but nothing else.
WPBeginner Support
Please check out the article how to fix white screen of death in WordPress.
管理者
Peter
Wow! I owe the author of this article some doughnuts from McDonalds
The procedure works like charm \m/
Hurray!
Yannick
Thanks! This article saved me twice already using the phpMyAdmin option
Dragan Avramovic
Thank you!
Max William
This really helped. Thanks!
Dorian
This post saved all my work. Thank you.
Ayda
Thank you so much.
Ayda
Elias Obeid
This solved my problem. An update for the [NextGEN Gallery by Photocrati] plugin was available, and the update messed things up. Maybe it ran out of memory, I don’t know. I was unable to acces my plugin site.
I increased the memory limit as described in a post from this site, by editing the wp-config.php file on the site. After this I deactivated the plugins, logged in and reactivated them. Thanks a lot.
WHITEFEATHER HUNTER
OK! I managed to find the htaccess_old file, rename it to htaccess and my site is back online with no more problems. I was able to identify the bad plugin (Front End Users) and now the site is allllllllll good! Thanks so much for this extremely useful post.
zippy
deactivate plugins – thank you so much
bibhuti
After I renamed the plugins folder, I am able to login but….as soon as i rename the plugins folder to default ,,,i am again getting a blank page………… please help………….how should i resolve this problem
WPBeginner Support
One of the plugins you had installed is causing the issue. Install and activate plugins one by one to figure out which plugin is causing the issue.
管理者
Laura
I am very new to wordpress, which we use at work to manage all the sites we do (I am not the web designer, so I don’t know how anything other than the basic wordpress dashboard works. I do not know how to access either of the things you mention in this post. I know it was a plug-in that caused the problem because I was trying to add plug-ins when this happened. Since we host a lot of wordpress sites, all with different plug-ins, I don’t know how to only fix the problem on the site that has the issue. Also, it’s not just the admin panel with the white screen, I also get that if I try to visit the actual site. Help!
WPBeginner Support
If you have FTP access to your site then you can try deactivating all plugins. Otherwise, we would suggest that you contact your network administrator, or web host.
管理者
olivier percheron
Thanks for this precious post. I’ve managed to restart my admin console with the plug-ins deactivation.
Thanks a lot for the help !!!
Mark Klinefelter
Your article saved my day!! Thank you so much! Had the white screen of death after I installed uber menu plugin…..Your advice got me back to the admin again to retest plugins!! Superb!
Mike
Just saved me some time, but in my case I had to activate plugins to get in.
kristine
Thanks a lot sir. I was able to fix it. Really grateful for this post. <3
Chad Ritchie
Thanks Syed, quick and simple solution got our site back up in less than a minute.
Taylor
Thank you very much! Quick and easy!
Didi Zaharieva
Thank you
my web host could not figure it out but you helped me solve the issue 
mhmd
Thanks for this info i found it very helpful
Stephanie
I’ve spent an hour trying to get back into my site, and you solved my problem within minutes. You directions were simple and easy to follow. Thanks so much for what you do!
Namit kapoor
Sir you and your ideas are really great and awesome.. always work for me…
ana
Hi! I ‘m having this trouble. I Know that is a plugin who is crashing my website bc it is failing since I installed it. But my problem is that even my wp-content is white so I cannot change the plugin folder name. I haven’t been able to enter trough ftp either. What should I do next? Thank you very much in advance
WPBeginner Support
Most good WordPress hosting providers offer cPanel dashboard or other similar web based interface to manage your hosting account. Log in to your hosting account and find File Manager on your cPanel dashboard. Navigate to your wp-content/plugins directory. Now you can either rename only the plugin that is causing the problem or you can rename the entire plugins directory. This should deactivate all your plugins.
管理者
ana
Thank you! I’ll definitively try that!
Brian Dollin
I went in through the file manager and deleted the conflicting plugin. You have a new follower now. Thanks for the advice!
Brian
Michael Price
Thank you for this. I’m very new to wordpress and my own blog. Panicked with all of a sudden it didn’t work. I use HostLatte and they are of zero help to me (I need to switch). Your suggestion worked! Thank you soooo much
Natasha
This has been beyond helpful! Actually your whole site is a goldmine of useful info for Wordpress newbies like me!
Many thanks!
Renate Hoornstra
thanks for this, i was locked out and this helped me get back in. thank you so much
Baker
This was really helpful, thanks. I couldn’t access my wp-admin page. I have just deactivated all plugins.
stephanie
Hello! I can’t access my admin site. I’m also not sure how to FPT? How can I do this?
WPBeginner Support
take a look at how to upload files to WordPress using FTP
管理者
Dani Perkins
Oh wow, you just saved me so many hours of freaking out! I love you. Seriously, thanks! When I had the white screen of death just now, I followed your directions and re-did the plugins to no avail, but when I restored my theme all was right with the world.
Shaneel
I tried using this but as soon as i enter my wp_options table i cannot find the active plugins tab..
Could you please help me out with this?
Thank You
sally
thank you for the easy to follow solution….
A plug in provider had suspended my access to WP admin with a big red screen after I asked to change from annual payments to monthly payments for the plug in.
Carlos Escórcio
It worked after renaming the plugins folder, thanks.
David
This advice, like many of your other ones, worked like a charm. The first time I switched back “on” the file, it crashed, then I deactivated again and it said no plugins files exist, then it worked.
So some of you may have to do it twice (perhaps a cache thing, I don’t know), but it worked.
In my case, the plug in that seemed to do it, wouldn’t reactivate as WP returned it would cause fatal error.
So I am thrilled to know what to do going forward.
thanks, WPBeginner!
Editorial Staff
It’s always our pleasure to help. Thanks for the comment.
管理者
Natalie Proffitt
Disabling the plugins has resolved the white screen on the front end but I’m still getting white screen on /wp-admin. Any ideas how to fix this as i can’t log in to the admin panel now
Edwin Lynch
Great post. Naturally, if you are using a security plug (that rewrites your .htaccess file for example) you might want to keep a bare Wordpress .htaccess file handy, too – and upload that to the root dir. You can get a copy of the standard .htaccess file from the root of any virgin WP install. Just keep it handy for lockouts generally… As you were.
David
I held my breath longer than a deepsea diver as I followed your instructions. It requires a degree of confidence and trust. For others, my problem was a plug-in which froze on activation, before getting the white screen treatment. I followed teh instructions about looking for wp-content, then to deactivate plug-ins. However, I decided just to delete the last plug-in only, and that did the trick! Thanks for providing such a ‘saver’!
Hari Babu
It worked thanks a lot.
Jordi
It works !!
THANK YOU my WordPress risen.
Maria
I deactivated all my plugins and themes except WP default theme, but the screen is still white and I cannot get to wp-admin.
Editorial Staff
Not sure why that is happening then.
管理者
Chetan Sharma
It worked!! Thanks a lot friend!! It worked and you have saved me!!
Roger Kamena
Your post SAVED ME….
Twice!!!
Thanks so much for writing this you don’t know how many hours of pain you saved me. Both times I had the problem I was able to resolve it in 10 minutes using your post instructions.
Roger
Lee Miller
Thank you for your articles on how to fix WordPress when something goes wrong.
I’m somewhat new to WordPress and so far i have been not able to access my admin panel twice and both times it took me months to fix. The last time I couldn’t fix it so I just removed WordPress from my domain and started all over. I had to have my domain host help me get everything off so that I could start over. Extreme way to correct a problem but with low tech knowledge it was what I had to do. Good thing that I’m persistant as I would have given up blogging a long time ago. It’s my joy in writing that keeps me going.
Thanks again for your site.
You are helping people worldwide. USA for me. Lee
Brad Dalton
Very handy tip if you get the white screen of death and not sure what caused it. Thanks
karthik
Recently i also suffered from a problem caused from a newly activated plugin and i think this post should have come before few days
Muhammad Yaqoob
Very informative and a must known thing!!
Thanks for the Post